Hydrogen iodide gas decomposes to hydrogen gas and iodine gas 2 HI(g) == H₂(g) + L₂(g)

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Date :
Chemical Equilibrium
Hydrogen iodide gas decomposes to hydrogen gas and
iodine gas
H₂(g) + L₂(g)
To determine the equilibrium constant of the
system,identical one liter glass bulbs are filled with
3.20g of HI and maintained at a constant
temperature. Each bulb is periodically opened and
analyzed for I₂ formation by reaction with thiosulfate
ion S₂O3
2-
2 HI(g) =
―
2-
1₂ (aq) + 2 S₂O3²- (aq) → S406²- (aq) + 2 I ¹¯(aq)
2-
It is determined that when equilibrium is reached 37.0
mL of 0.200 M S₂O3(aq) is required to react with I₂
(aq). What is the Kc at the temperature of the reaction ?
Transcribed Image Text:Date : Chemical Equilibrium Hydrogen iodide gas decomposes to hydrogen gas and iodine gas H₂(g) + L₂(g) To determine the equilibrium constant of the system,identical one liter glass bulbs are filled with 3.20g of HI and maintained at a constant temperature. Each bulb is periodically opened and analyzed for I₂ formation by reaction with thiosulfate ion S₂O3 2- 2 HI(g) = ― 2- 1₂ (aq) + 2 S₂O3²- (aq) → S406²- (aq) + 2 I ¹¯(aq) 2- It is determined that when equilibrium is reached 37.0 mL of 0.200 M S₂O3(aq) is required to react with I₂ (aq). What is the Kc at the temperature of the reaction ?
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